GB Q415NH Chinese steel grade Carbon & Alloy Steel

GB Q415NH Chinese steel grade,The company's main business: ship plate, low alloy plate, automobile steel, high-strength plate, pipeline steel, boiler steel plate, weathering plate, wear-resistant plate, bridge plate, pressure vessel plate, steel plate, steel processing, etc. The company takes the implementation of high-end, high-quality, deep processing, strengthening the main business, diversified operation, group operation, enterprise transformation and upgrading as its development strategy, and makes all efforts to be your professional steel supplier and partner.

Under the specification EN 10025-2, S275J2 plates are mainly used in the building industry and mechanical engineering, containers,storage tanks and roll formed steel profiles,such as steel angles, steel structures, H-beams, T-sections. For , S275J2 carbon steel, our engineers still suggest done normalized heat treatment for them if customers want to improve their steel's property when using Else, this steel must be done low temperature impacting test at -20℃,GB Q415NH Chinese steel grade.

Difference between Q345R boiler vessel plate and ordinary Q345 plate, :Q345R boiler vessel plate is pressure vessel steel, Q345 plate is low alloy steel.Q345R boiler vessel plate generally requires flaw detection and positive deviation, while Q345 plate generally has lower requirements.In terms of performance, Q345R boiler vessel plate and Q345 plate are of the same level. However, due to high requirements, they can not be mixed in general.Generally, the requirement of Q345R boiler vessel plate is higher than Q345 plate, GB Q415NH Chinese steel grade.

GB Q415NH Chinese steel grade,The correct choice of billet type, section shape, size and weight are of great significance to steel rolling production. Steel rolling production has certain technical requirements for raw materials, such as steel type, section shape, size, weight, and surface quality. The consideration of these technical requirements is necessary to ensure the quality of steel. It should also be specifically considered when determining and selecting the blank. The rolling method can be divided into cold rolling and hot rolling according to the rolling temperature.

GB Q415NH Chinese steel grade,40Cr grade under GB/T 3077-2015 standard is a alloy steel bar material. 40Cr alloy chemical composition (C: 0.37 ~ 0.44, Si: 0.17 ~ 0.37, Mn: 0.50 ~ 0.80, Cr: 0.80 ~ 1.10, Ni: ≤0.30, P: ≤0.030, S: ≤0.030, Cu: ≤0.30, Mo: ≤0.10). Heat treatment: First quenching heating temperature (℃): 850; coolant: oil; Temperature heating temperature (℃): 520. 40Cr steel tensile strength (σb / MPa): ≥980. Yield point (σs / MPa): ≥785

GB Q415NH Chinese steel grade,Before delivering our hot rolled plate product we apply various tests to check the quality of carbon steel plates such as- mechanical test, chemical test, hardness test, toughness test, eddy current test, impact test, micro test, flaring test, flattening test, etc We are provided best packing for structural steel plates to avoid rust Our after-sales service team will contact you if you have any question,GB Q415NH Chinese steel grade.